Mixer for a bottle



FIG. 1 is an upper perspective view of a mixer for a bottle showing my new design.

FIG. 2 is a right-side elevation view thereof;

FIG. 3 is a left side elevation view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a front elevation view thereof;

FIG. 6 is a rear perspective view thereof;

FIG. 7 is a top view thereof; and,

FIG. 8 is a bottom view thereof. 

CLAIM The ornamental design for a mixer for a bottle, as shown and described. 